pc-bios/s390-ccw/bswap.h

   1 /*
   2  * Byte swap functions - taken from include/qemu/bswap.h
   3  *
   4  * This work is licensed under the terms of the GNU GPL, version 2 or (at
   5  * your option) any later version. See the COPYING file in the top-level
   6  * directory.
   7  */
   8
   9 static inline uint16_t bswap16(uint16_t x)
  10 {
  11     return ((x & 0x00ff) << 8) | ((x & 0xff00) >> 8);
  12 }
  13
  14 static inline uint32_t bswap32(uint32_t x)
  15 {
  16     return ((x & 0x000000ffU) << 24) | ((x & 0x0000ff00U) <<  8) |
  17            ((x & 0x00ff0000U) >>  8) | ((x & 0xff000000U) >> 24);
  18 }
  19
  20 static inline uint64_t bswap64(uint64_t x)
  21 {
  22     return ((x & 0x00000000000000ffULL) << 56) |
  23            ((x & 0x000000000000ff00ULL) << 40) |
  24            ((x & 0x0000000000ff0000ULL) << 24) |
  25            ((x & 0x00000000ff000000ULL) <<  8) |
  26            ((x & 0x000000ff00000000ULL) >>  8) |
  27            ((x & 0x0000ff0000000000ULL) >> 24) |
  28            ((x & 0x00ff000000000000ULL) >> 40) |
  29            ((x & 0xff00000000000000ULL) >> 56);
  30 }